CSES - Datatähti 2022 alku - Results
Submission details
Task:Spiraali
Sender:motsgar
Submission time:2021-10-04 02:41:53
Language:C++17
Status:READY
Result:100
Feedback
groupverdictscore
#1ACCEPTED15
#2ACCEPTED20
#3ACCEPTED65
Test results
testverdicttimegroup
#1ACCEPTED0.01 s1details
#2ACCEPTED0.01 s2details
#3ACCEPTED0.01 s3details

Code

#include <bits/stdc++.h>

using namespace std;

long long n, t;

long long start;

long long get(long long p)
{
    return n * n + p * ((-4 * (p - 1) * 2 - 4) / 2) - p;
}

int main(int argc, char **argv)
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    cin >> n >> t;

    long long centerX = n / 2 + 1;
    long long centerY = n / 2;

    for (long long i = 0; i < t; i++)
    {
        long long x, y;
        cin >> y >> x;
        long long rengas = max(abs(centerX - x), abs(centerY - y));
        long long arvo = get(rengas);

        if (y == centerY + rengas && x < centerX + rengas)
        {
            arvo += rengas;
            arvo += x - (centerX - rengas);
        }
        else if (x == centerX - rengas)
        {
            arvo += y - centerY;
        }
        else if (y == centerY - rengas)
        {
            arvo -= rengas;
            arvo -= x - (centerX - rengas);
        }
        else
        {
            arvo -= rengas + 2 * (rengas - 1);
            arvo -= y - centerY + rengas + 2;
        }

        cout << arvo << "\n";
    }
}

Test details

Test 1

Group: 1

Verdict: ACCEPTED

input
10 100
1 1
1 2
1 3
1 4
...

correct output
1
36
35
34
33
...

user output
1
36
35
34
33
...

Test 2

Group: 2

Verdict: ACCEPTED

input
1000 1000
371 263
915 322
946 880
53 738
...

correct output
773533
312166
206053
200080
593922
...

user output
773533
312166
206053
200080
593922
...

Test 3

Group: 3

Verdict: ACCEPTED

input
1000000000 1000
177757853 827347032
409613589 419171337
739269360 256524697
328695530 896842209
...

correct output
571375684522141210
967321186816598569
762879105851175000
370065046779516790
936897883750373771
...

user output
571375684522141210
967321186816598569
762879105851175000
370065046779516790
936897883750373771
...